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Showing posts with the label Units and MeasurementsShow All
Consider a simple pendulum, having a bob attached to a string that oscillates under the action of the force of gravity. Suppose that period of oscillation of the simple pendulum depends on its length (l), mass of the bob (m) and acceleration due to gravity (g). Derive the expression for its time period using method of dimensions. Units and Measurements

Consider a simple pendulum, having a bob attached to a string that oscillates under the action of the force of gravity. Suppose that period of oscillation of the simple pendulum depends on its length (l), mass of the bob (m) and acceleration due to gravity (g). Derive the expression for its time period using method of dimensions.

Physics Q Phobia January 24, 2019

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The SI unit of energy is J = kg m2 s-2; that of speed v is m s-1 and of acceleration a is m s -2. Which of then formulae for kinetic energy (k) given below can you rule out on the basis of dimensional arguments (m stand for the mass of the body)? (a) K = m2v3 (b) K = (1/2) mv2 (c) K = ma (d) K = (3/16) mv2 (e) K = (1/2) mv2 + ma Units and Measurements

The SI unit of energy is J = kg m2 s-2; that of speed v is m s-1 and of acceleration a is m s -2. Which of then formulae for kinetic energy (k) given below can you rule out on the basis of dimensional arguments (m stand for the mass of the body)? (a) K = m2v3 (b) K = (1/2) mv2 (c) K = ma (d) K = (3/16) mv2 (e) K = (1/2) mv2 + ma

Physics Q Phobia January 24, 2019

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Let us consider an equation 1/2 m v2=mgh Where m is the mass of the body, v its velocity g is the acceleration due to gravity and h is the height. Check whether this equation is dimensionally correct. Units and Measurements

Let us consider an equation 1/2 m v2=mgh Where m is the mass of the body, v its velocity g is the acceleration due to gravity and h is the height. Check whether this equation is dimensionally correct.

Physics Q Phobia January 24, 2019

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5.74 g of a substance occupied 1.12 cm3. Express its density by keeping the significant figure in view. Units and Measurements

5.74 g of a substance occupied 1.12 cm3. Express its density by keeping the significant figure in view.

Physics Q Phobia January 24, 2019

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Each side of a cube is measured to be 7.203m. What are the total surface area and the volume of the cube to appropriate significant figures? Units and Measurements

Each side of a cube is measured to be 7.203m. What are the total surface area and the volume of the cube to appropriate significant figures?

Physics Q Phobia January 24, 2019

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